Carrier

Abstract

The utility model discloses a carrier which at least comprises a first connecting base and a plurality of sets of supports, each support is provided with a first end portion and a second end portion, the first end portions can be connected with the first connecting base in a rotating mode around a first rotating center line, and the second end portions can be connected with the second connecting base in a rotating mode around a second rotating center line. The support can rotate around the first rotating center line and can move relative to the first connecting base in the extending direction of the first rotating center line, a locking mechanism is arranged between the support and the first connecting base, and the locking mechanism comprises a locking structure arranged at the first end and a matching structure arranged on the first connecting base. When the locking mechanism is in a locking state, the locking mechanism is matched with the matching structure; when the locking mechanism is in an unlocking state, the first end part is far away from the first connecting seat, the locking structure is separated from the matching structure, the plurality of groups of brackets can be relatively far away from or close to each other, and the locking mechanism is simple in principle and convenient to operate.

Description

TECHNICAL FIELD

[0001] The utility model relates to a carrier. BACKGROUND

[0002] In the prior art, the carrier has a support for maintaining its own structure, and some carriers can change the state of the carrier by adjusting the support to adapt to different use scenarios or people. To facilitate storage and carrying, some carriers also have a folding function. During unfolding or folding of the carrier, the state of the support also changes. To enable the carrier to stably maintain its own state, a locking mechanism is usually provided to lock the support. When the state of the carrier needs to be changed, the locking mechanism needs to be unlocked. However, the locking mechanism of most carriers is complex in principle and cumbersome to operate, which causes great inconvenience to users. SUMMARY

[0003] The utility model aims at providing a new carrier.

[0004] To achieve the above-mentioned purpose, the utility model adopts the technical scheme of a carrier, which comprises at least a first connecting seat and a support. The support is provided in multiple groups. The support has a first end portion and a second end portion arranged at different ends in the length direction of the support. The first end portion is rotatably connected to the first connecting seat about a first rotation center line and movably arranged relative to the first connecting seat along the extension direction of the first rotation center line,

[0005] A locking mechanism for limiting relative rotation between the support and the first connecting seat is arranged therebetween. The locking mechanism comprises a locking structure arranged on the first end portion and a matching structure arranged on the first connecting seat.

[0006] Along the extension direction of the first rotation center line, the first end portion has at least a first position and a second position relative to the first connecting seat. When the first end portion is at the first position, the locking structure and the matching structure are matched with each other, and the locking mechanism is in a locked state. When the first end portion is at the second position, the first end portion is away from the first connecting seat, the locking structure and the matching structure are separated from each other, and the locking mechanism is in an unlocked state. The multiple groups of supports can be close to or away from each other.

[0007] In some embodiments, the locking mechanism further comprises an operating member and a linkage assembly connected to the operating member, the operating member is rotatably arranged relative to the first connecting seat about a rotation axis, the rotation axis is intersected with the first rotation center line, the operating member has at least a first state and a second state, when the operating member is in the first state, the rotation axis and the first connecting seat have a first distance, when the operating member is in the second state, the rotation axis and the first connecting seat have a second distance, the second distance is smaller than the first distance,

[0008] The linkage assembly is configured to drive the first end portion away from or close to the first connecting seat during the rotation of the operating member.

[0009] Further, the linkage assembly comprises a protrusion and a linkage member, wherein the protrusion is arranged on the operating member and extends outwardly along the radial direction of the rotation axis, the linkage member has an axis which is parallel to or collinear with the first rotation center line, one end portion of the linkage member is rotatably connected to the operating member about the rotation axis, and the other end portion of the linkage member is connected to the first end portion, when the operating member is in the first state, the protrusion abuts against the first connecting seat, and the first end portion is in the first position; when the operating member is in the second state, the protrusion is separated from the first connecting seat, and the first end portion is in the second position.

[0010] Preferably, the extension direction of the rotation axis is perpendicular to the extension direction of the first rotation center line.

[0011] Preferably, the linkage assembly further comprises a resilient member arranged between the first connecting seat and the first end portion, the resilient member is configured to provide the required force for the first end portion to move away from the first connecting seat, and / or the linkage member is rotatably connected to the first end portion about its own axis.

[0012] In some embodiments, each set of the support and the first connecting seat is provided with the locking mechanism, each of the locking mechanisms is provided with one operating member, or a plurality of linkage assemblies are connected to the same operating member.

[0013] In some embodiments, the locking mechanism comprises a first lock tooth arranged on the first end portion, the cooperating structure comprises a second lock tooth arranged on the first connecting seat, when the locking mechanism is in the locked state, the first lock tooth and the second lock tooth are engaged with each other, and when the locking mechanism is in the unlocked state, the first lock tooth and the second lock tooth are disengaged.

[0014] In some embodiments, the carrier has an unfolded state and a folded state, the carrier comprises two groups of side supports arranged on left and right sides, the side supports constitute the supports, in the unfolded state, the side supports extend along the up-down direction, the upper end of the side supports constitutes the first end, the lower end of the side supports constitutes the second end, the first rotation center line extends along the up-down direction,

[0015] The carrier further comprises a second connecting seat and two groups of bottom supports arranged on left and right sides, the bottom supports extend along the front-back direction, the front part of the bottom supports is rotatably connected with the second connecting seat around a second rotation center line, the rear part of the bottom supports is rotatably connected with the lower end of the side supports around a third rotation center line, the second rotation center line extends along the up-down direction, the third rotation center line extends along the left-right direction, in the folded state, the two groups of side supports are relatively folded, the side supports and the bottom supports are relatively folded.

[0016] Further, the carrier further has an intermediate state between the unfolded state and the folded state, in the unfolded state, the two third rotation center lines arranged on left and right sides have an included angle, in the intermediate state, the two groups of side supports are relatively folded along the left-right direction, the two groups of bottom supports are relatively folded along the left-right direction, and the two third rotation center lines are parallel to each other.

[0017] Further, the carrier further comprises two groups of first wheel assemblies arranged on left and right sides, the first wheel assembly comprises a first wheel seat and a first wheel body rotatably arranged on the first wheel seat, the first wheel seat is rotatably arranged on the rear part of the bottom support around a fourth rotation center line, the fourth rotation center line extends upwardly and rearwardly from front to back, in the unfolded state, along the left-right direction, the two groups of first wheel bodies are located outside the two groups of bottom supports, and in the folded state, the two groups of first wheel bodies are folded between the two groups of bottom supports.

[0018] By means of the above technical scheme, the carrier of the utility model has the following advantages compared with the prior art: the locking mechanism of the carrier is arranged between the first end and the first connecting seat, by driving the first end to move relative to the first connecting seat along the extension direction of the first rotation center line, the locking and unlocking of the locking mechanism can be realized, in the unlocked state, the supports can be driven to relatively approach or move away, so as to change the state of the carrier, and the unfolding and folding operation of the carrier can also be realized, in the locked state, the supports are locked, and the carrier can also maintain stability, the principle of the locking mechanism is simple, the unlocking and locking operation is convenient, and the user can operate conveniently. BRIEF DESCRIPTION OF DRAWINGS

[0019] ATTACHFigure 1 is a three-dimensional structure schematic view of the carrier of the specific embodiment of the utility model in the unfolded state;

[0020] attached Figure 2 is attached Figure 1 is an exploded schematic view of the partial structure;

[0021] attached Figure 3 is attached Figure 2 is a schematic view from another perspective;

[0022] attached Figure 4 is a sectional schematic view of the locking mechanism in the locked state;

[0023] attached Figure 5 is a sectional schematic view of the locking mechanism in the unlocked state;

[0024] attached Figure 6 is attached Figure 5 is an enlarged schematic view of A in the middle;

[0025] attached Figure 7 is a three-dimensional structure schematic view of the carrier of the embodiment in the intermediate state;

[0026] attached Figure 8 is a three-dimensional structure schematic view of the carrier of the embodiment in the folded state;

[0027] Wherein: 1, first connecting seat; 11, connecting groove; 111, second lock tooth; 112, limiting protrusion; 12, first fixing frame; 2, side support; 21, rod main body; 22, connecting head; 221, first lock tooth; 222, limiting groove; 31, operating piece; 311, driving part; 312, operating part; 313, protrusion; 32, rotating shaft; 33, linkage; 34, elastic piece; 35, gasket; 4, bottom support; 41, first rod section; 42, second rod section; 5, second connecting seat; 51, second fixing frame; 52, support frame; 6, first wheel assembly; 61, first wheel seat; 62, first wheel body; 7, second wheel assembly; 71, second wheel seat; 72, second wheel body; 8, push rod frame; 81, first push rod; 82, second push rod; 83, push handle rod. DETAILED DESCRIPTION

[0028] The technical scheme of the utility model will be further described below in combination with the drawings and specific embodiments.

[0029] Referring to Figure 1The carrier shown at least comprises a first connecting seat 1 and a support, the support is provided with a plurality of groups, wherein the support has a first end and a second end which are respectively arranged at two different ends along the length direction of the support, the first end is rotatably connected with the first connecting seat 1 around a first rotation center line X1, and is movably arranged relative to the first connecting seat 1 along the extension direction of the first rotation center line X1. By driving the support to rotate, the plurality of groups of supports are relatively far away or close to each other, so as to realize the adjustment of the state of the carrier.

[0030] The first connecting seat 1 and the support are provided with a locking mechanism for limiting the relative rotation of the two, when the locking mechanism is in the locked state, the carrier can maintain stability, and after the locking of the locking mechanism is released, the state of the carrier can be converted. The locking mechanism comprises a locking structure arranged at the first end and a matching structure arranged on the first connecting seat 1, and the locking of the first connecting seat 1 and the support is realized by the mutual cooperation between the locking structure and the matching structure.

[0031] Along the extension direction of the first rotation center line X1, the first end has a first position and a second position relative to the first connecting seat 1, when the first end is in the first position, the locking structure and the matching structure are matched with each other, and the locking mechanism is in the locked state; when the first end is in the second position, the first end is away from the first connecting seat 1, the locking structure and the matching structure are separated, and the locking mechanism is in the unlocked state, in this state, the plurality of groups of supports can be relatively far away or close to each other. By driving the first end to move relative to the first connecting seat along the extension direction of the first rotation center line X1, the locking and unlocking operations of the locking mechanism can be realized, and the principle is simple.

[0032] In the embodiment, the carrier has an unfolded state and a folded state, and has two groups of side supports 2 arranged on the left and right sides, the side support 2 constitutes the above-mentioned support, when the carrier is in the unfolded state, the two groups of side supports 2 are relatively unfolded, the distance between the two second ends is greater than the distance between the two first ends, in this state, the carrier has good stability. When the carrier is folded, the side support 2 is rotated relative to the first connecting seat 1, and the two groups of side supports 2 are relatively folded. When the carrier is in the folded state, the distance between the two second ends is reduced, and the two groups of side supports 2 are folded together. In the unfolded state, the distance between the two second ends can also be adjusted by driving the two groups of side supports 2 to be relatively close or far away, and the included angle between the two groups of side supports 2 can be changed, so as to change the state of the carrier, so that it can be suitable for different use scenarios or people.

[0033] In this embodiment, the locking structure includes a first locking tooth 221 disposed on the first end, and the engaging structure includes a second locking tooth 111 disposed on the first connecting seat 1. When the locking mechanism is in the locked state, the first locking tooth 221 and the second locking tooth 111 mesh with each other, thereby preventing the first end from rotating relative to the first connecting seat 1. When the locking mechanism is in the unlocked state, see [reference needed]. Figure 6 As shown, the first locking tooth 221 and the second locking tooth 111 disengage, and the first end can rotate relative to the first connecting seat 1. In this state, the vehicle can be unfolded or folded, or the position of the side bracket 2 can be adjusted.

[0034] In this embodiment, the side bracket 2 is rod-shaped, having a rod body 21 extending in a first direction, and a connector 22 fixed to one end of the rod body 21 and extending in a second direction. The connector 22 is located at the aforementioned first end. See also Figure 2 As shown, in this embodiment, the first direction and the second direction form an obtuse angle. The axis of the connector 22 extends collinearly with the first rotation center line X1, and the connector 22 is rotatably connected to the first connector 1 around the first rotation center line X1. Specifically, see... Figure 3 As shown, the first connecting seat 1 has a connecting groove 11, and the connector 22 is inserted into the connecting groove 11. The connector 22 can rotate within the connecting groove 11 and slide within the connecting groove 11.

[0035] In this embodiment, see Figure 2 As shown, the connector 22 is stepped in the axial direction, having two parts of different sizes that are fixedly connected. Each part is provided with a set of first locking teeth 221. Specifically, the size of the connector 22 decreases along the direction closer to the first connecting seat 1. In this embodiment, the connecting groove 11 is also stepped to match the connector 22, and the connecting groove 11 is also provided with two sets of second locking teeth 111 that respectively cooperate with the two sets of first locking teeth 221. This arrangement makes the locking between the first connecting seat 1 and the side bracket 2 more stable when the locking mechanism is in the locked state. In this embodiment, a limiting structure for limiting the rotation angle between the side bracket 2 and the first connecting seat 1 is also provided between the connector 22 and the connecting groove 11. Specifically, the limiting structure includes a limiting groove 222 provided on the outside of the connector 22, and a limiting protrusion 112 provided on the inner sidewall of the connecting groove 11, the limiting protrusion 112 being inserted into the limiting groove 222. The limiting protrusion 112 can only move within the limiting groove 222. The relative rotation between the side bracket 2 and the first connecting seat 1 is limited by the cooperation between the limiting protrusion 112 and the limiting groove 222.

[0036] In this embodiment, the locking mechanism further includes an operating member 31, which is rotatably mounted relative to the first connecting seat 1 about a rotation axis 32. The extension direction of the rotation axis 32 is perpendicular to the extension direction of the first rotation center line X1. The locking mechanism also includes a linkage component, which drives the first end to move away from or towards the first connecting seat 1 during the rotation of the operating member 31. The user can control the locking mechanism by rotating the operating member 31, thereby controlling the locking and unlocking of the first connecting seat 1 and the side bracket 2.

[0037] In this embodiment, the linkage assembly includes a protrusion 313 and a linkage member 33. The protrusion 313 is disposed on the operating member 31 and extends radially outward along the rotation axis 32. Specifically, in the locked state, the protrusion 313 extends protruding towards the first connecting seat 1. The protrusion 313 is located between the first connecting seat 1 and the rotation axis 32 and abuts against the first connecting seat 1. The axis of the linkage member 33 extends parallel to or collinear with the first rotation center line X1. One end of the linkage member 33 is rotatably connected to the operating member 31 around the rotation axis 32, and the other end of the linkage member 33 is connected to the first end. The linkage assembly also includes an elastic member 34 disposed between the first connecting seat 1 and the first end. The elastic member 34 is used to provide the force required for the first end to move away from the first connecting seat 1.

[0038] In this embodiment, see Figure 2 , Figure 3 As shown, the operating component 31 and the side bracket 2 are respectively disposed on opposite sides of the first connecting seat 1. The operating component 31 includes a drive part 311 and an operating part 312 fixedly connected. The drive part 311 is rotatably disposed on the first connecting seat 1 around the rotation axis 32, and a protrusion 313 is disposed on the drive part 311. The drive part 311 can be driven to rotate by the operating part 312. Specifically, the drive part 311 is cylindrical and extends in the same direction as the rotation axis 32. The drive part 311 has a through hole that extends axially, and the rotation axis 32 passes through the through hole. The through hole is offset from the axis, so the distance from the drive part 311 to the rotation axis 32 is different at different points around the axis. The side with a larger distance constitutes the aforementioned protrusion 313.

[0039] During the rotation of the operating member 31, the distance between the rotating shaft 32 and the first connecting seat 1 changes as the position of the protrusion 313 abutting against the first connecting seat 1 changes. In this embodiment, by driving the operating member 31 to rotate, the rotating shaft 32 can be driven to move away from or closer to the first connecting seat 1 along the extension direction of the first rotation center line X1. The rotating shaft 32 can drive the linkage member 33 to move axially, and the linkage member 33 drives the first end to move, thereby changing the position of the first end and realizing the locking and unlocking operation.

[0040] In the embodiment, the linkage 33 is rotatably connected with the first end portion around the axis of the linkage 33. The linkage 33 can not only drive the first end portion to move along the extension direction of the first rotation center line X1, but also can drive the first end portion to rotate relative to the linkage 33 when the first end portion is switched to the second position, so as to complete the switching between the unfolded state and the folded state. The elastic member 34 is a compression spring, which is sleeved outside the linkage 33 and is arranged between the groove bottom of the connecting groove 11 and the connecting head 22. In the embodiment, the gasket 35 is arranged between the operating member 31 and the first connecting seat 1, and the operating member 31 abuts against the gasket 35. Specifically, the gasket 35 is arranged between the driving portion 311 and the first connecting seat 1, and the driving portion 311 abuts against the gasket 35, so as to avoid the damage to the driving portion 311 and the first connecting seat 1 caused by the direct contact between the driving portion 311 and the first connecting seat 1. In the embodiment, the first connecting seat 1 and the gasket 35 are provided with the limiting groove, and the driving portion 311 abuts against the groove wall of the limiting groove.

[0041] Specifically, the operating member 31 has at least a first state and a second state. When the operating member 31 is in the first state, as shown in FIG. 4, the rotating shaft 32 is away from the first connecting seat 1, and the first end portion is located at the first position close to the first connecting seat 1 under the driving of the linkage 33. The protrusion 313 abuts against the first connecting seat 1, and the first connecting seat 1 is pressed against the side support 2. The locking mechanism is in the locked state. The driving portion 311 is driven by the operating portion 312 to rotate away from the first connecting seat 1, so as to change the position of the protrusion 313 abutting against the first connecting seat 1, and change the distance between the rotating shaft 32 and the first connecting seat 1. Figure 4 Figure 5 , Figure 6 When the operating member 31 is in the second state, as shown in FIG. 5, the protrusion 313 is separated from the first connecting seat 1, and the rotating shaft 32 is close to the first connecting seat 1. In this state, the distance between the rotating shaft 32 and the first connecting seat 1 is the second distance, which is smaller than the first distance. The first end portion is away from the first connecting seat 1 and is switched to the second position. The locking mechanism is in the unlocked state.

[0042] ​When the locking mechanism needs to be switched to the locked state, the operating member 31 is rotated around the rotation axis 32 to switch it to the first state. During this process, the protrusion 313 abuts against the first connecting seat 1, and the rotation axis 32 moves away from the first connecting seat 1. The rotation axis 32 drives the linkage member 33 to move closer to the first connecting seat 1 along the extension direction of the first rotation center line X1. The linkage member 33 drives the first end to move closer to the first connecting seat 1, so that the elastic member 34 is compressed and the first locking tooth 221 and the second locking tooth 111 mesh with each other. When it is necessary to release the locking mechanism, the operating member 31 is rotated in the opposite direction around the rotation axis 32 to switch it to the second state. During this process, the position of the protrusion 313 abutting against the first connecting seat 1 changes, the first end is released, and under the force of the elastic member 34 restoring its original shape, the first end moves away from the first connecting seat 1, so that the first locking tooth 221 and the second locking tooth 111 disengage.

[0043] In this embodiment, each set of side brackets 2 is provided with a locking mechanism between itself and the first connecting seat 1, and the two locking mechanisms share a single operating element 31. By rotating the operating element 31, the locking and unlocking of the two locking mechanisms can be achieved simultaneously, which is more convenient. In other embodiments, there are more than two sets of side brackets 2, and each set of side brackets 2 is provided with a locking mechanism between itself and the first connecting seat 1. Multiple linkage components are connected to the same operating element 31, that is, multiple locking mechanisms share a single operating element 31. The operating elements 31 of some locking mechanisms are set separately and are not shared with other locking mechanisms. In this way, the locking and unlocking operations of the locking mechanism can be performed independently, thereby allowing the corresponding side bracket 2 to be adjusted independently. In some other embodiments, each locking mechanism is provided with an operating element 31, and the unlocking and locking operations of each locking mechanism are performed independently without interference.

[0044] The vehicle in this embodiment is used as a trolley, and it also includes a base support 4, a second connecting seat 5, a wheel assembly located at the bottom, and a push rod frame 8 for driving the vehicle to move. In order to more clearly describe the relative positional relationship of the components on the vehicle, the directions such as up, down, left, right, front, back, inside, and outside are defined by the direction observed by the person pushing the vehicle when the vehicle is in the unfolded state.

[0045] Specifically, see Figure 1 As shown, in the unfolded state, two sets of side supports 2 are respectively located on the left and right sides, and the side supports 2 extend in the vertical direction. The upper end of the side support 2 constitutes the first end mentioned above, and the lower end of the side support 2 constitutes the second end. The first rotation center line X1 extends in the vertical direction.

[0046] In the embodiment, the bottom supports 4 extend along the front-rear direction and include two groups arranged on the left and right sides. The second connecting seat 5 is located on the front side of the carrier, and the front part of the bottom support 4 is rotatably connected with the second connecting seat 5 around the second rotation center line X2. The rear part of the bottom support 4 is rotatably connected with the lower end of the side support 2 around the third rotation center line X3. The second rotation center line X2 extends along the up-down direction, and the third rotation center line X3 extends along the left-right direction. Specifically, the second rotation center line X2 is parallel to the first rotation center line X1. When the carrier is in the unfolded state, the two groups of bottom supports 4 are relatively unfolded along the left-right direction, and the distance between the rear ends of the two groups of bottom supports 4 is greater than the distance between the front ends thereof. When the carrier is in the folded state, the two groups of side supports 2 and the two groups of bottom supports 4 are relatively folded along the left-right direction, and the side supports 2 and the bottom supports 4 are relatively folded along the up-down direction.

[0047] In the embodiment, when the carrier is in the unfolded state, the two third rotation center lines X3 arranged on the left and right sides have an included angle, so that the two groups of side supports 2 cannot be synchronously folded relative to the bottom supports 4. Thus, the side supports 2 and the bottom supports 4 can be automatically maintained in the unfolded state.

[0048] In other embodiments, a locking mechanism can be arranged between the second connecting seat 5 and the bottom support 4, and used to limit the relative rotation between the second connecting seat 5 and the bottom support 4, so that the carrier is maintained in the unfolded state or the folded state. In some other embodiments, in order to further improve the stability of the carrier, a locking mechanism can be arranged between the first connecting seat 1 and the side support 2, and between the second connecting seat 5 and the bottom support 4.

[0049] In the embodiment, the carrier also has an intermediate state between the unfolded state and the folded state. When the carrier is converted to the intermediate state, the locking mechanism is first unlocked, and then the side supports 2 on the two sides are driven to rotate relative to each other, and the two groups of bottom supports 4 are driven to rotate relative to each other along the left-right direction. When the carrier is in the intermediate state, as shown in Figure 7 , the two groups of side supports 2 are relatively folded along the left-right direction, the two groups of bottom supports 4 are relatively folded along the left-right direction, and the two third rotation center lines X3 are parallel to each other. In the embodiment, when the carrier is in the intermediate state, the two third rotation center lines X3 extend in the same line. In this state, the two groups of side supports 2 are parallel to each other, and the two groups of side supports 2 can be synchronously folded relative to the bottom supports 4, and can be converted to the folded state.

[0050] In the embodiment, the wheel assembly includes two groups of first wheel assemblies 6 arranged on the left and right sides. The first wheel assembly 6 includes a first wheel seat 61 and a first wheel body 62 rotatably arranged on the first wheel seat 61. The first wheel seat 61 is rotatably arranged on the rear part of the bottom support 4 around the fourth rotation center line X4, and the fourth rotation center line extends upwardly and rearwardly. Specifically, as shown in Figure 1 ,Figure 7 As shown, the bottom support 4 is also in the shape of a rod, which has a first rod segment 41 extending in the front-rear direction, and a second rod segment 42 extending obliquely rearward and upward from a rear end of the first rod segment 41, and the first wheel seat 61 is rotatably connected to the second rod segment 42.

[0051] Referring to Figure 1 As shown, when the carrier is in the unfolded state, the two groups of first wheel bodies 62 are located outside the two groups of bottom supports 4 in the left-right direction. When the carrier is in the intermediate state and the folded state, the two groups of first wheel bodies 62 are folded between the two groups of bottom supports 4 in the left-right direction. A locking assembly is provided between the first wheel assembly 6 and the bottom support 4, and the locking assembly is used to lock the first wheel seat 61 relative to the bottom support 4. The locking assembly can adopt the structure in the prior art, which will not be described in detail here.

[0052] In this embodiment, the wheel assembly further includes a second wheel assembly 7 provided at the bottom of the second connecting seat 5, which includes a second wheel seat 71 fixedly provided at the bottom of the second connecting seat 5, and a second wheel body 72 rotatably connected to the second wheel seat 71. In this embodiment, the second wheel seat 71 extends rearward from the second connecting seat 5, and the second wheel body 72 is rotatably connected to the rear of the second connecting seat 5. In the unfolded state, the second wheel seat 71 and the second wheel body 72 are located between the two groups of bottom supports 4 in the left-right direction. In other embodiments, in the unfolded state, the second wheel body 72 can be located below the second connecting seat 5 or in front of the second connecting seat 5, and the second wheel body 72 can be folded rearward when the carrier is folded, thereby reducing the size of the carrier in the front-rear direction after folding.

[0053] In this embodiment, when the carrier is in the unfolded state, the first connecting seat 1 extends in the front-rear direction, the side support 2 is rotatably connected to the front of the first connecting seat 1, and the push rod holder 8 extends in the up-down direction, and the lower part of the push rod holder 8 is rotatably connected to the rear of the first connecting seat 1. Referring to Figure 1 As shown, the push rod holder 8 includes a first push rod 81 and a second push rod 82 slidingly and telescopically connected in the length direction, and in the unfolded state, the lower end of the first push rod 81 is rotatably connected to the rear of the first connecting seat 1. Specifically, the second push rod 82 is slidingly and telescopically inserted into the rod cavity of the first push rod 81. The push rod holder 8 further includes a push handle 83 for a user to hold, which extends in the left-right direction, and one end of the push handle 83 is fixedly connected to the upper end of the second push rod 82.

[0054] The carrier of the embodiment is used for carrying articles, and can be a golf cart in particular. The carrier is further provided with a first fixing frame 12, a second fixing frame 51 and a support frame 52 for supporting articles. The first fixing frame 12 is arranged on the first connecting seat 1, and the second fixing frame 51 and the support frame 52 are arranged on the second connecting seat 5. The first fixing frame 12 and the second fixing frame 51 each include two groups arranged on left and right sides. As shown in Figure 1 In the unfolded state, the first fixing frame 12 is located at the front end of the first connecting seat 1, and the two groups of first fixing frames 12 each extend in the front-rear direction, and the spacing between the two groups of first fixing frames 12 gradually increases from back to front. The second fixing frame 51 is arranged in a similar manner to the first fixing frame 12. In the unfolded state, the second fixing frame 51 is located at the front end of the second connecting seat 5, and the two groups of second fixing frames 51 each extend in the front-rear direction, and the spacing between the two groups of second fixing frames 51 gradually increases from back to front. The support frame 52 also extends in the front-rear direction and is located below the second fixing frame 51. When the carrier is in the unfolded state, a carrying space is formed between the first fixing frame 12, the second fixing frame 51 and the support frame 52, and articles can be placed in the carrying space. The support frame 52 supports the bottom of the articles, the rear part of the articles can abut against the first fixing frame 12 and the second fixing frame 51, and the articles can be fixed relative to the first fixing frame 12 and the second fixing frame 51.

[0055] In summary, the carrier of the embodiment has a simple structure. In the unfolded state, the locking mechanism is in the locked state, the two groups of side supports 2 and the two groups of bottom supports 4 are relatively unfolded in the left-right direction, the two groups of side supports 2 form an acute angle, and the two groups of bottom supports 4 also form an acute angle. The side supports 2 are unfolded relative to the bottom supports 4, the side supports 2 and the second rod segment 42 extend in the same length direction, the two groups of first wheel bodies 62 are located outside the two groups of bottom supports 4, and the carrier has good stability.

[0056] When folding the vehicle, the locking mechanism is first unlocked by rotating the operating part 312, making the unlocking operation simple. Then, the two sets of side supports 2 and the two sets of bottom supports 4 are folded in the left-right direction, and the first wheel seat 61 is rotated around the bottom support 4, causing the first wheel 62 to fold between the two sets of bottom supports 4. When the two sets of side supports 2 are parallel to each other, the two third rotation center lines X3 extend in the same direction, and the two sets of first wheels 62 are folded between the two sets of bottom supports 4, the vehicle is in an intermediate state. During the continued folding of the vehicle, the side supports 2 do not need to rotate relative to the first connecting seat 1; they only need to be flipped downwards to fold relative to the bottom support 4, and the push rod frame 8 is rotated to fold relative to the side supports 2. Therefore, in the intermediate state, the locking mechanism can be switched to a locked state by rotating the operating part 31, locking the side supports 2 and the first connecting seat 1 together. In this embodiment, the two sets of first fixing frames 12 and the two sets of second fixing frames 51 can also be folded. Specifically, by driving the two sets of first fixing frames 12 to flip relative to each other in the left and right direction, the first fixing frames 12 can be folded relative to the first connecting seat 1. Similarly, by driving the two sets of second fixing frames 51 to flip relative to each other in the left and right direction, the second fixing frames 51 can be folded relative to the second connecting seat 5.

[0057] When the vehicle is in the folded state, see Figure 8 As shown, the side support 2 extends in the front-to-back direction, the first connecting seat 1 extends in the vertical direction, the second connecting seat 5 folds under the first connecting seat 1, the push rod frame 8, the side support 2, and the bottom support 4 fold together in the vertical direction, and the first wheel assembly 6 and the second wheel assembly 7 fold between the two sets of bottom supports 4 and simultaneously between the two sets of side supports 2. In this state, the vehicle has a compact structure, with reduced dimensions in both the vertical and horizontal directions. The folded vehicle occupies little space, and the wheel assembly supports the ground, allowing the vehicle to stand upright and facilitating storage and organization.

[0058] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.

Claims

1. A carrier, characterized by: The carrier comprises at least a first connecting seat and a plurality of supports, the supports have first ends and second ends arranged at different ends along the length direction of the supports, the first ends are rotatably connected with the first connecting seat along a first rotation center line and movably arranged relative to the first connecting seat along the extension direction of the first rotation center line, a locking mechanism is arranged between the supports and the first connecting seat to limit the relative rotation of the supports and the first connecting seat, the locking mechanism comprises a locking structure arranged on the first end and a matching structure arranged on the first connecting seat, along the extension direction of the first rotation center line, the first end has at least a first position and a second position relative to the first connecting seat, when the first end is at the first position, the locking structure and the matching structure are matched with each other, and the locking mechanism is in a locked state; when the first end is at the second position, the first end is away from the first connecting seat, the locking structure and the matching structure are separated from each other, and the locking mechanism is in an unlocked state, and the plurality of supports can be close to or away from each other.

2. The vehicle of claim 1, wherein: The locking mechanism further comprises an operating member and a linkage assembly connected with the operating member, the operating member is rotatably arranged relative to the first connecting seat along a rotation axis, the rotation axis is intersected with the first rotation center line, and the operating member has at least a first state and a second state, when the operating member is at the first state, the rotation axis and the first connecting seat have a first distance, and when the operating member is at the second state, the rotation axis and the first connecting seat have a second distance smaller than the first distance, the linkage assembly is configured to drive the first end away from or close to the first connecting seat during the rotation of the operating member.

3. The carrier of claim 2, wherein: The linkage assembly comprises a protrusion and a linkage member, the protrusion is arranged on the operating member and extends outwardly along the radial direction of the rotation axis, the linkage member has an axis of the linkage member which is parallel or collinear with the first rotation center line, one end of the linkage member is rotatably connected with the operating member along the rotation axis, and the other end of the linkage member is connected with the first end, when the operating member is at the first state, the protrusion abuts against the first connecting seat, and the first end is at the first position; when the operating member is at the second state, the protrusion is separated from the first connecting seat, and the first end is at the second position.

4. The carrier of claim 2, wherein: The extension direction of the rotation axis is perpendicular to the extension direction of the first rotation center line.

5. The carrier of claim 3, wherein: The linkage assembly further comprises a resilient member arranged between the first connecting seat and the first end, the resilient member is configured to provide the required force for the first end to move away from the first connecting seat, and / or the linkage member is rotatably connected with the first end along the axis of the linkage member.

6. The carrier of claim 2, wherein: Each of the locking mechanisms is provided with one of the operation members, or a plurality of the linkage assemblies are connected with one of the operation members.

7. The vehicle of claim 1, wherein: The locking structure comprises first locking teeth provided on the first end portions, and the cooperating structure comprises second locking teeth provided on the first connecting seat, the first locking teeth and the second locking teeth are engaged with each other when the locking mechanism is in the locked state, and the first locking teeth and the second locking teeth are disengaged when the locking mechanism is in the unlocked state.

8. The carrier of any one of claims 1 to 7, wherein: The carrier has an unfolded state and a folded state, and comprises two groups of side supports respectively arranged on left and right sides, the side supports constitute the supports, in the unfolded state, the side supports extend in the up-down direction, the upper end portions of the side supports constitute the first end portions, and the lower end portions of the side supports constitute the second end portions, the first rotation center line extends in the up-down direction, The carrier further comprises a second connecting seat and two groups of bottom supports respectively arranged on left and right sides, the bottom supports extend in the front-back direction, the front portions of the bottom supports are rotatably connected with the second connecting seat about a second rotation center line, the rear portions of the bottom supports are rotatably connected with the lower end portions of the side supports about a third rotation center line, the second rotation center line extends in the up-down direction, and the third rotation center line extends in the left-right direction, in the folded state, the two groups of side supports are relatively folded, and the side supports and the bottom supports are relatively folded.

9. The carrier of claim 8, wherein: The carrier further has an intermediate state between the unfolded state and the folded state, in the unfolded state, an included angle is formed between the two third rotation center lines respectively arranged on left and right sides, in the intermediate state, the two groups of side supports are relatively folded in the left-right direction, the two groups of bottom supports are relatively folded in the left-right direction, and the two third rotation center lines are parallel to each other.

10. The carrier of claim 8, wherein: The carrier further comprises two groups of first wheel assemblies respectively arranged on left and right sides, the first wheel assemblies comprise first wheel seats and first wheel bodies rotatably arranged on the first wheel seats, the first wheel seats are rotatably arranged on the rear portions of the bottom supports about fourth rotation center lines, the fourth rotation center lines extend upwardly and rearwardly from front to back, in the unfolded state, in the left-right direction, the two groups of first wheel bodies are located outside the two groups of bottom supports, and in the folded state, the two groups of first wheel bodies are folded between the two groups of bottom supports.

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